Visible display attachment fob measuring pumps



Jan. 15 1924.

W. S. TOWNSEND ET AL .VISIBLE DISPLAY ATTACHMENT FOR MEASURING PUMPSOriginal Filed June 12 Reisaued Jan. 15, 1924.

UNITED STATES Re. 15,748 PATENT OFFICE.

S. TOWNSEND AND FRANK DOUGLASS, OF ROCHESTER, PENNSYLVANIA.

VISIBLE DISPLAY ATTACHMENT FOR MEASURING PUMPS.

Original I0. 1,450,984,

dated April 10, 1923, Serial 100. 567,836, filed June 12, 1922.Application for reissue filed November 14, 1928. Serial .Il'o. 674,774.

To all whom it may concern: 1

Be it known that we, WILLIAM S. Townsnm) and FRANK E. DOUGLASS, citizensof the United States, residing at Rochester, in the county of Beaver andState of Pennsylvania, have invented certain new and useful Improvementsin Visible Display Attachments for Measuring Pumps, of which thefollowing is a specification,

paratus.

The object of the invention is to provide an attachment particularlyadapted for oil measuring and dispensing pumps; said attachment"comprising a visible container which may first be filled only from thepump to display the oil to the purchaser; the visible container beingkept filled and not emptied of its contents by the action of the pump. v

Fig. 1 is a perspective of an oil tank and measuring pump with ourvisible container attachment applied.

Fig. 2 is a vertical section of the visible container.

The supply tankis indicated at 1, and the pump 2 1s mounted on topthereof and provided with a horizontal discharge pipe 3. The attachment4 comprises'a cylindrical glass container 5 closed at its lower end by aon -like base 6 having. a seat 7 and washer 8. he base 6 has a lateralinlet nipple 9 coupled to the dischar pipe 3 and an out et nipple 10 inits ttom into which screws the threaded upper end of the dischargenozzle 11.

The discharge nozzle 11 is provided with a valve seat- 12 and anupwardly closing check valve 13, the depending stem '14 of which passesthrough an apertured crossbar 15. A spring 16 mounted on the stem 14between the valve 13 and the crossbar 15 holds the valve to its seatunder normal conditions. The area of the discharge nozzle is thusrestricted so that theliquid from the pump will be compelled to rise andfill the container.

Across the upper part of the cap 6 extends a crossbar or spider 17 havina central threaded boss 18 into which is t readed the lower end of acentral rod 19, the up er end of which extends through a centra openingin a cap or cover 20 and is provided with a suitable nut 21 so that thebase 6 and cap 20 are secured firmly upon the ends of Our inventionrelates to dispensing apthe visible container 5. The cap has an annularseat 21 and washer 22 for the upper end of the container so that it isairclosed by its spring 24 and provided with 1 an exposedstem 25preferably concealed by a screw cap 26. An ordinary tire valve. willserve the purpose. The operation is as follows: T heoperator first opensthe vent valve 23 and then operates the measuring pump 2, whereupon theoil from tank 1 will flow through discharge pipe 3 and up into the glasscontainer 5; the va ve 13 remaining closed. As soon as the container 5is filled the vent valve23 will e released and closed by its spring. Thecontents of the container 5 will now be visible to prospectivepurchasers and must necessarily be of the same kind as that in thesupply tank 1.

Having thus filled the visible container from tank 1, the oil pump 2will thereafter fulfill its ordinary function of delivering a measuredquantity of oil as per the sample in the visible container, since theforce of the flow will open the outlet valve 13 and the pump pressurewill, in connection with the closed vent valve 23 and pressure of theatmosphere, prevent the emptying of the visible container.

In other words, the glass container will' always be filled with the sameoil as that being measured and dispensed b the pump 2 and after havingbeen once lled will not interfere with the flow of measured liquid fromthe pump 2.-

Obviously, the construction may be variously modified without departingfrom the spirit of our invention.

What we claim is: v

1. A visible display attachment for pumps, comprising a' visiblecontainer having an inlet for connecting it withthe discharge 2. Avisible attachment for pumps, comprising a visible container providedwith connected cap and base, a closable vent in the cap, in inlet in thebase for connection with a pump outlet, a discharge nozzle an upwardlyclosing check valve controlling said discharge nozzle and adapted toremain closed when the vent is opened for filling the container from thepump and during the cessation of flow through said inlet and to openonly under the pressure exerted by liquid pumped through the inlet afterthe container has been first filled and its vent closed.

3. A visible display attachment for pumps, comprising a visiblecontainer having an inlet for connecting it with the discharge side of apump, a normally closed vent to prevent outflow of the contents of thecontainer when filled, means operable from the exterior of the containerto open the vent to permit the'filling of the container from the pump, adischarge nozzle, and a discharge valve past which, when open, theliquid may flow through the discharge nozzle without discharging thecontents of the container.

4. A visible display attachment for pumps, comprising a visiblecontainer having an inlet for connecting it with the discharge side of apump, a normally closed vent valve toallow, when opened, the escape ofair as the container is being filled from the pump and preventing theescape of the liquid from the container when closed, and an outlet forthe container having a restricted passage of less cross sectional areathan said inlet, whereby in normal operation the container will bemaintained full of liquid.

5. A visible display attachment for pumps, comprising a visiblecontainer having an inlet in its bottom for connecting it with thedischarge side of a pump and an outlet also in the said bottom having arestricted passage of less cross sectional area than said inlet, anda-normally closed vent valve in the upper end of the container which,when opened, will first allow the liquid retarded at the restrictedoutlet to rise and fill the container for display purposes and which,when closed, will cause the liquid to be held in the container whileliquid is being forced by the pump from the inlet to the outlet fordispensmg purposes.

In testimony whereof, we aflix our signatures.

WILLIAM S. TOWNSEND. FRANK E. DOUGLASS.

